ire30614 digital radio 14.03.2016 redacted

Høgskolen i Østfold 1 Avdelingfor ingeniørfag

EKSAMEN

FAG: IRE 30614 Digital Radio Lærer: Reidar Nordby / tel Grupper:

Antall oppgavesider:

2

Sensurfrist: 7. a ri12016 Hjelpemidler:

Dato: 14. mars 2016Tid: 09:00 - 13:00 Antall vedleggsider:

6

Kalkulator

Skriftlig utdelt materiell, herunder utskrift av elektronisk utdelt skriftlig materiell.

Egenprodusert formelsamling, med notater godkjent og signert av faglærer.

Beasley & Miller Modem Electronic Communication - 9. ed (Pearson Education) Pierre Lescuyer: UMTS. Origins, architecture and the standard. ( Springer Ferlag )

KANDIDATEN MÅ SELV KONTROLLERE AT OPPGAVESETTET ER FULLSTENDIG

Lykke til!

Hogskolen i Østfold 2 Avdelingfor ingenierfag

Oppgave 1: Støy, nivåer og referanser.

Vi har en spenningsforsterker med Au= 40dB og båndbredden Af = 100kHz. Forsterkerens komponenter holder en temperatur på 27°C. Utgangsimpedansen i forsterkeren er nesten ideell med

Når inngangen er koblet direkte til jord avleser vi en vekselstrømspenning på utgangen lik lmV.

Oppgave la: Hva skyldes denne spenningen? Hva er dens opprinnelse?

Oppgave lb: Vi kobler til en motstand mellom jord og inngangen på forsterkeren, nå avleser vi en støyspenning på utgangen lik 6 mV. Hva skyldes dette?

Oppgave lc: Hvor stor er motstanden som ble koblet inn når vi vet at motstanden holder en temperatur på 20°C?

Oppgave ld: Hva blir signal /støyforholdet i utgangsignalet fra forsterkeren i dette tilfellet?

Oppgave 2 transmisjonslinjer og tilkoblinger

Vi har en transreceiver- stasjon med utgangs og inngangsimpedanse = 50 ubalansert, arbeidsfrekvens 430 —450 MHz

Denne skal kobles til en vertikalpolarisert foldet dipol med impedanse 300 S/ resistivt via en RG58U koaksialkabel (datablad vedlagt) og nødvendige mellomkoblinger. Avstanden mellom transreceiveren og antenna nødvendiggjør en kabellengde på 15 meter.

Oppgave2a: Lag en enkel prinsippskisse over radioinstallasjonen.

Oppgave2b: Hvordan vil du omdanne det ubalanserte signalet i koaksialkabelen til et balansert signal til antenna? Ta med de nødvendige beregningene.

Oppgave 2c: For å tilpasse impedansen i antenna til transmisjonslinja benyttes en kvartbølgetransformator. Gjør beregninger av en slik med de gitte opplysningene.

Hint: vedlegg 2og 3

Oppgave 2d: Det viser seg ved innmåling av antenna at vi har fått en SWVR = 2,3 Hvor mye av effekten blir returnert tilbake til sendetrinnet?

Oppgave 3

Mye småflykommunikasjon ligger i området 108 til 118 Mhz hvor modulasjonen er FM. Du får i oppdrag å lage en konverter slik at småflyaspiranter kan benytte en vanlig FM radio beregnet til bruk i området 88-108 MHz. Dette kan gjøres ved en opptransformering, filtrering og nedtransformering. Benytt første lokaloscilator = 600MHz med melomfrekvens 492-482MHz.

Vi benytter kun halve FM båndet slik at vi kun benytter 88-98 MHz på FM-mottakeren.

Oppgave 3a: Tegn et blokkskjema over hvordan du kan tenke deg konverteren vil være.

Dersom nedkonverteringen fra den beskrevne mellomfrekvensen skal skje i kun ett trinn (en

lokaloscillator og en mikser), hva blir lokaloscilatorfrekvensen for nedkonverteringen?

Høgskolen i Østfold 3 Avdeling for ingeniørfag

Oppgave3b: Beregn eventuelle speilfrekvenser og-bånd som vil oppstå. Hvor ligger eventuelle konflikter?

Oppgave3c: Hvilke filtre (og av hvilken type) vil være nødvendig i konverteren?

Oppgave4

5G mobiltelefoni og IoT.

Oppgave 4a: Forklar konseptet IoT, forklar hvorfor 5G mobiltelefoni og Intemet Protokol ver6 er viktig for IoT.

Oppgave4b: Hva kjennetegner et 5G mobiltelefonisystem, hva er de utvidede bruksområdene relativt til 4G?

Oppgave 4c: Hva forventer vi av IoT i framtiden? Hvilke muligheter gir dette oss som sivilisasjon?

Oppgave 5 Kortholdskommunikasjon

Kortholdskommunikasjon får øket betydning innen overvåkning, styring og automasjon. IEEE har utgitt noen standarder som dekker området.

Oppgave 5a: Hva står IEEE for, hvilken rolle spiller denne organisasjonen som rådgiver?

Oppgave5b: Standarden IEEE 802 har flere underkategorier —hvilke?

I hvilken underkategori fmner vi "lav overføringshastighet, lavt energiforbruk"?

Oppgave5c: Lag en skisse av et ZigBee nettverk, med alle kategorier noder (roller) presentert.

Gi en tekstlig beskrivelse av hver kategori.

Høgskoleni Østfold 4 Avdelingfor ingeniørfag

Vedlegg1 DatabladRG58 U

Product Description

t ktion

1

Neste sider:Vedlegg2 og 3 Belden datablader

Detailed Specifications & Technical Data BELLEN

METRIC MEASUREMENT VERSION

89182 Twinax - Twinaxial Cable

For more Information please call 1-800-Belden1

General Description:

22 AWG stranded (19x34) tinned copper conductors, foam FEP Teflon® insulation, Duofoile (100%

coverage) plus a stranded tinned copper drain wire, FEP Teflon jacket.

Physical Characteristics (Overall) Conductor

AWG:

41,111.1 4/~4~§1~14! 0/15411114

1 " 22 19X34 - Tinned L.opuer 0 7874

Total Number of Conductors: 2

Insulation Insulation Material:

,S1~"tium. Mity" _

TefflOn® FEP - Foarn Fluonnated Ethylene Ptupyiene 7.0612

Outer Shield

X*11~— C?!.195..11,

Duofoil® Tape Aluminum Foil-Polyester Tape-Alummum Foil 100 Outer Shleld Draln WIre AWG:

AWG Stranding Dreln Wiri

Conductor

22 1ex.34 finned uopper

Outer Jacket

olikr"mewath~,,f9s,

Teflon® Fluonnated Ethylene Ropyiene

Overall

Cable

Overall Nomlnal Dlameter: 7.798 mm

Pair

Pair Color Code Chart:

Number Colot,

LAVSL~Wing

76.213.124 Left Hand Lay

Mechanical Characteristics (Overall)

OperatIng Temperature Ftange: -70°C To +200°C

Bulk Cable WeIght: 72 475 Kg/Km

Max. Recommended PullIng Tenslon: 124.550 N

Min. Bend Radlus/Mlnor Axls: 88.900 mm

Applicable Specifications and Agency Compliance (Overall) Applicable Standards & Environmental Programs

CECIC(UL) SpecIfIcatIon: CMP

EU DIrective 20111651EU (ROHS II): Yes

EU DirectIve 20001531EC (ELV): Yes

EU DIrectIve 2002/95/EC (RoFIS): Yes

EU RoHS Compliance Date (mm/dd/yyyy): 04/01/2005

EU DIrectIve 20021961EC (WEEE): Yes

EU DirectIve 2003/11/EC (BFR): Yes

Detailed Specifications & Technical Data

BELDEN

METRIC MEASUREMENT VERSION

89182 Twinax - Twinaxial Cable

CA Prop 88 (CJ for Wire & Cable):

IdliOrder

539(denal

FlameTest

UL Flame Test:

C(UL) Flame Test:

Yes Yes

NFPA 262 FT8

Plenum/Non

Plenum

Pienum (fiN): Yes

Non-Plenum Nurnber 9182

ElectrIcal Characterlstles (OveraS)

Nom. Characteristic Impedance:

150 Nom. Inductance:

0.95149

Nom. Capackance Conductor to Conductor:

Norn. Capacitance Cond. to Other Conductor & Shield:

54.1385

Nominal Velocity of PropagatIon:

Nomlnal Delay:

Nom. Conductor DC ResIstance:

45.934

Nomlnal Outsr Sideld DC Resistanar

20.6703 Norn. Attenuation:

1 1.3124

10 3.9372

8.8587 100 -f14.1083 200 I20 3422 480 128.8728 Max. Operating Voltage - UL:

300 V RMS (CMP) 150 V RMS (CL2P)

Notes (Oesrall)

Notes: Teflone is a registered trademark of E. I. duPont de Nemours and Co. used under license by Beiden, Inc. Other MaximumContinuous Currrents: 2.9 Amps per conductor

©

Put Ups and Colors:

89182 0085000:5,000 FT' 255.000 LB: GRAY1C'2 , 522 FFEP FS FEP

89182 010100011,000 FT53.000 LBtBLACKTCt2 522 FFEP FS FEP

89182 0105001500 0105000[5,000 i FT28.000 FT255.000 LB-1—BLACK' LBi BLACK'2 C'2 ⁵ 522 22 FFEP FFEP FS FS FEP FEP 89182

89182 06050005,000 FT0.0001CHROME-3,-.., 2 #22 FFEP FS FEP

Notes:

C = CRATE REEL PUT-UP.

Detailed Specifications & Technical Data BELEEN

METRIC MEASUREMENT VERSION

89182 Twinax - Twinaxial Cable

Revision Number 1 Revision Date: 04-17-2008

2015 Belden, Inc All Rights Reserved.

Although Belden makes every reasonable effort to ensure their accuracy at the time of this publication, information and specifications descebed herein are subject to error or omission and to change without notice, and the listing of such information and specifications does not ensure product availability.

Belden pro,iides the information and specifications herein on an "AS IS" basis, with no representations or warranties, whether express, statutory or iniplied. In no event will Belden be liable for any damages (including consequential, indirect, incidental, special, punitive, or exemplary damages) whatsoever, even if Belden has been advised of the possibility of such damages, whether in an action under contract, negligence or any other theory, arising out of or in connection with the use, or inability to use, the information or spedfications described herein.

All sales of Belden products are subject to Belden's standard terms and conditions of sale.

Belden believes this product to be in compliance with EU RoHS (Directive 2002/95/EC, 27-Jan-2003). Matehal manufactured phor to the compliance date may be in stock at Belden facilities and in our Distributors inventory. The information provided in this Product Disdosure, and the iden8fication of matehals listed as reportable or restricted within the Product Disdosure, is correct to the best of Belden's knowledge, information, and belief at the date of its publication. The information provided in this Product Disclosure is designed only as a general guide for the safe handling, storage, and any other operation of the product itself or the one that it becomes a part of. This Product Disdosure is not to be considered a warranty or quality specification.

Regulatory information is for guidance purposes only. Product users are responsible for determining the applicabihty of legislation and regulations based on their individual usage of the product.

Detailed Specifications & Technical Data

BELC EN

METRIC MEASUREMENT VERSION

9857 Coax - 125 Ohm Coax

For more Information please call 1-800-Belden1

General Description:

125 ohm, 22 AWG solid .025" bare copper-covered steel conductor, semi-solid polyethylene insulation, bare copper braid shield (95% coverage), non-contaminating PVC jacket.

Physical Characteristics (Overall) Conductor

AWG:

1 22 Solid BCCS - Bare Copper Steel 0.635

Total Number of Conductora: 1

Insulation

Semi-Solid PE - Semi-Solid Polyethylene 7.239

Outer Shield

.1,14

Outer Jacket

.9«bst,

PVGNG - Polymnyl Ghlonde Non-Gontarninating

Overall Cable

Overall Nomlnal DIameter: 10.287 mm

Mechanical Characteristics (Overall)

OperatIng Temperature Range: -40°C To .80°C

Non-UL Temperature Rating: 60°C

Bulk Cable WeIght: 126.497 Kg/Km

Max. Recommended Pulling Tenalon: 662.782 N

MIn. Bend Radlus/MInor Axls: 107.950 mm

Applicable Specifications and Agency Compliance (Overall) Applicable Standards & Environmental Programs

NECI(UL) SpecIfIcation: CMH

EU DIrective 20111651EU (ROHS II): Yes

EU CE Mark: No

EU DIrective 2000153/EC (ELV): Yes

EU Directive 2002/95/EC (RoHS): Yes

EU RoHS Compliance Date (mm/dd/yyyy): 10/01/2005

EU DIrective 2002/961EC (WEEE): Yes

EU DIrectIve 2003111/EC (BFR): Yes

CA Prop 65 (CJ for WIre 6 Cable): Yes

MII Order 539 (ChIna RoHS): Yes

MIlltary SpecItIcatIon: MIL-C-17, M17/31-RG63

RG Type: 63/1J

Plenum/Non

Plenum

Plenum (Y/N): No

Detailed Specifications & Technical Data

BELDEN

METRIC MEASUREMENT VERSION

9857 Coax - 125 Ohm Coax

Electrical Characteristics (Overall)

Norn. Characteristic Impedance:

125 Nom. Inductance:

Nom. Capacttance Conductor to ShIeld:

Clft*ftli 1P1¥4 31 8257

Nomlnal Velocity of Propagation:

VP,09 84 Nominal Delay:

3 97001

Nom. Conductor DC Resistance:

R9MMIRMilMilft

135 177 '

Nomlnal Outer Shleld DC Resistance:

OCR @ 20.O (Ottr)*tt.r)

Nom. AttenuatIon:

0 6562

10 1 6405

50 3 6091

100 4 9215

200 7.5463

400 11 1554

700 15.0926

900 18.0455

1000 19.0298

Put Ups and Colors:

i*n"

tk14

0101000

Notes:

C = CRATE REEL PUT-UP.

Revision Number 3 Revision Date: 08-22-2012

C 2015 Belden, Inc All Rights Reserved.

Although Belden makes every reasonable effort to ensure their accuracy at the time of this publication, information and specifications deschbed herein are subject to error or omission and to change without notice, and the listing of such information and specifications does not ensure product availability.

Belden provides the information and specifications herein on an "AS IS" basis, with no representations or warranties, whether express, statutory or implied. In no event will Belden be liable for any damages (including consequential, indirect, incidental, special, punitive, or exemplary damages) whatsoever, even if Belden has been advised of the possibility of such damages, whether in an action under contract, negligence or any other theory, arising out of or in connection with the use, or inability to use, the information or specificafions described herein.

All sales of Belden products are subject to Belderis standard terms and conditions of sale.

Belden believes ttXs product to be in compliance with EU RoHS (Directive 2002/95/EC, 27-Jan-2003). Material manufactured prior to the compliance date may be iii stock at Belden facilities and in our Distributor's inventory. The information provided in this Product Disdosure, and the identification of materials listed as reportable or restricted within the Product Disdosure, is correct to the best of Belden's knowledge, information, and behef at the date of its publication. The information provided in this Product Disdosure is designed only as a general guide for the safe handling, storage, and any other operation of the product itsetf or the one that it becomes a part of. This Product Disdosure is not to be considered a warranty or quality specification.

Regulatory information is for guidance purposes only. Product users are responsible for deterrnining the applicability of legislation and regulations based on their individual usage of the product.